Variola : Pox. 333 



the owner cannot always tell whether she has been in the infect- 

 ing woods, or having been in, whether she is infected, it becomes 

 an important public health question whether such a source of 

 deadly disease should be perpetuated, where human food, is open 

 to contamination. 



VARIOIvA : POX. 



Definition : Structure of lesion. Nomenclature. History, smallpox, 

 sheeppox, cowpox, horsepox. Animals susceptible: Man, sheep, cow, goat, 

 horse, pig, dog, buffalo, camel, monkey. Microbiology : A pure contag- 

 ium, particulate contagium, cocci, sporidium vaccinale. Horsepox : Early 

 history, means of infection. Symptoms : Vesicles on lips, on heels, concre- 

 tions, treatment. Cowpox : Relation to horsepox. Causes. Relation to 

 smallpox. Observations of Ceely, Fletcher, Thiele, Klein, Martin, Reiter, 

 Chauveau, influence of vaccination, of spring parturitions, of infected 

 stables. Symptoms : Incubation, seat and nature of vesicle, inoculations 

 for vaccine. Diagnosis from aphthous fever, rinderpest, eruption of mast- 

 feeding, false cowpox, streptococcus eruption. Duration. Course. Prognosis. 

 Treatment. Sheeppox : Synonyms. Definition. Pathogenesis : Sheep, 

 goat, ox, dog, pig, horse. Forms : Discrete, confluent, haemorrhagic. 

 Distribution. Causes. Contagion ; extends on air ; experiments on blood ; 

 wool, hides, litter, buildings, yard, parks, railway cars, boats, clothes, 

 manure, wine, milk, men, dogs, cats, birds, vermin, flies. Receptivity. 

 Overcrowding, filth, starvation, neglect, wars, commerce. Recovered 

 sheep. Disinfectants. Incubation 4 to 7 days ; conditions affecting. 

 Symptoms : Hyperthermia, general disorders, rigors, anorexia, skin blush 

 on parts devoid of wool, red points, papules, vesicles, pustules, desiccation. 

 Successive crops. On eye, nasal mucosa, mouth, pharynx, intestines, 

 lungs. Confluent cases. Lesions. Prognosis. Mortality. Depreciation. 

 Treatment. Prevention : By segregation, slaughter and disinfection ; by 

 ovination. Technique of ovination. Resulting immunity. Sheep-pox in 

 Goat: Danger of infection to sheep. Goatpox. Swinepox : From man, 

 sheep, goat. Symptoms. Forms : Discrete, confluent. Susceptibility of 

 young. Treatment. Prevention. Dogpox : From man ; from sheep. 

 Other eruptions in dog. Symptoms : Fever, flushed skin, red points, 

 papules, vesicles, pustules. Discrete. Confluent. Treatment. Preven- 

 tion of infection of man and sheep. 



By the generic name Variola is understood a febrile malady 

 attended b}' a characteristic eruption on the skin, at first papular, 

 then becoming vesicular and finally pustular. The structure of 

 the vesicle is so characteristic that it may be taken to indicate the 

 variolous eruption as found in man and a variety of the domestic 



